Questions tagged [aeronautical-charts]
For questions relating to navigation charts, but not performance charts.
173
questions
5
votes
1answer
188 views
What does the “Caution” box mean on the sectional near Half Moon Bay, California?
What does this Caution box on the sectional chart near Half Moon Bay, California mean? Is there an official reference for the meaning of this box?
0
votes
2answers
122 views
Are the airspace times of operation days of the week in local or Zulu time?
The margin of the Enroute High sectional H-4 claims that the times of operation of the airspace R-5107K near El Paso are "1400-0300Z, MON-FRI" (and other times by NOTAM).
If the days of the week are ...
8
votes
1answer
116 views
Which timezone do airspaces that cross a time zone boundary belong to on a VFR sectional?
The Albuquerque VFR sectional claims that the airspace table in the margin use local time, but some of the airspaces in the table cross timezone boundaries. Which timezone do those airspaces belong ...
12
votes
2answers
377 views
Gas Venting Stations: What's The Big Deal?
On sectional charts you can see that, through various restrictions, regulators encourage pilots to avoid flying too close to Gas Venting Stations. These seem to be places where natural gas may ...
0
votes
0answers
25 views
In an Intermediate Approach Segment, why are the Optimum Approach ratio 0% and the max. approach ratio 5.2%?
In an Intermediate Approach Segment, the Optimum Approach ratio is 0% and the max. approach ratio is 5.2%. Where do those specific numbers come from, and what do they mean to pilots?
0
votes
0answers
14 views
For find a value of obstacles height below mentioned in intermediate segment why I should take the IAF MOCA instead of FAF MOCA?
It is said that we have to think all risk of flight in this segment that's why we have to take the 4420ft because the plane can be situated any point in this interval
2
votes
2answers
163 views
How can I identify the FAF on this Jeppesen chart?
According to this Jeppesen ILS Approach Chart:
How can the FAF be identified?
Would it be the point at which the G/S is intercepted?
What is the difference between FAF and FAP?
1
vote
0answers
62 views
What is the map projection for FAA terminal procedure charts?
What is the map projection for FAA terminal procedure charts and what are the parameters (standard parallels) for each specific airport? I couldn’t find any information with the publication ...
5
votes
1answer
102 views
Can IAF and IF be in the same spot?
While looking over an ILS approach chart,
I found that there is a fix where says : (IF/IAF) ACZUP ...
And I was consfused whether the two IF and IAF can be in the same place, or the spot is used as ...
4
votes
1answer
124 views
What units are used for the horizontal grid lines on a sectional?
On a standard 1:500,000 aviation sectional chart, the map is broken down into quadrangle "sections" with a maximum elevation figure printed in blue in the center.
Using a chart-plotter I can see ...
1
vote
1answer
139 views
In the US, how does the distinction between E2 and E3/E4 airspace affect pilots?
In the US, practically speaking, how does the distinction between the E2 and E3/E4 subtypes of Class E airspace affect pilots?
3
votes
5answers
189 views
How do I improve navigation with a VFR sectional chart?
I am doing my PPL atm. I am struggling to navigate with a VFR sectional chart, I am getting lost more often. How do I fix this issue? Any tips?
I have trouble identifying small towns, identifying ...
20
votes
1answer
2k views
Why would an airport be depicted with symbology for runways longer than 8,069 feet even though it is reported on the sectional as 7,200 feet?
This airport, KMKO, Muskogee-Davis Regional in Oklahoma southeast of Tulsa is depicted on the sectional chart with symbology normally reserved for airport with a hard surfaced runway longer than 8069 ...
0
votes
1answer
129 views
What is the inner dashed line on this helicopter chart?
Inside the delta for KSGR is another blue dashed circle. What is this?
4
votes
1answer
2k views
What is the difference between VFR Flyways, Corridors and Transition Routes?
What is the difference between:
VFR Flyways
VFR Corridors
VFR Transition Routes
I can find a Flyway chart on the reverse side of the TAC chart and also Transition Routes in the TAC chart. But where ...
0
votes
1answer
188 views
May an ultralight vehicle pass directly above KEGE at 9200 MSL at 1600Z with no prior authorization without violating FAR 103.17?
May an ultralight vehicle pass directly above KEGE at 9200 MSL at 1600Z with no prior authorization without violating FAR 103.17?
http://vfrmap.com/?type=vfrc&lat=39.643&lon=-106.916&zoom=...
5
votes
1answer
165 views
How can I overlay a VFR sectional on another map to identify features and landmarks?
How do I know which highways and landmarks on a VFR sectional align with which real-world features? Is there a way to overlay the VFR sectional map from the FAA on top of Google Maps or Bing?
Edit: I'...
1
vote
2answers
744 views
How can I find a final approach fix (FAF)?
I have a problem understanding FAF - how can I find FAf on a precision approach without the lightning bolt/zigzag symbol. I know the Maltese cross means FAF for a non-precision approach.
According to ...
-4
votes
1answer
167 views
Why does this VOR's compass has an arrow pointing north east?
The VOR compass here has an arrow that points to the north east. I never saw an VOR compass like that. What is the explanation?
1
vote
2answers
168 views
Stadium game at Miami blocking runways? [duplicate]
So I was looking for the Miami In in SkyVector and I saw this.
Apparently a stadium game has the power to block runways in (At least in US).
What is really going on there? I am not well acquinted ...
4
votes
1answer
167 views
What are the historical precedents of today's E2 and E4 airspace? (US)
What are the historical precedents of today's E2 and E4 airspace? From what previous airspace classes did these airspaces evolve? How do these precedents help us understand the significance of the ...
2
votes
0answers
97 views
In the US, can airspace simultaneously be E2 and E4? What happens at KSTC to the airspace in the dashed magenta boundary when the tower closes?
In the US, can the same airspace simultaneously be E2 and E4?
Consider the case of KSTC -- St. Cloud Regional Airport, MN.
http://vfrmap.com/?type=vfrc&lat=45.546&lon=-94.059&zoom=10
On ...
3
votes
3answers
317 views
Can the Class-E-to-surface airspace near Eagle County Regional airport (KEGE) and Marshall AAF (KFRI) be ignored when the tower is open?
Can the Class-E-to-surface designation indicated by the dashed magenta lines outside the dashed blue circle at Eagle County Regional airport (KEGE) be ignored when the tower is open?
Likewise at ...
2
votes
2answers
94 views
Measurement discrepancy on vfrmap dot com sectional — is the grid wrong?
At Nome Alaska-- KOME-- the E2 airspace (dashed magenta line) is listed as extending 13.2 (nautical) miles east of the airport-- according to this source page E-9 -- https://www.faa.gov/...
2
votes
1answer
87 views
Considering all US untowered airports, what is the furthest distance that E2 airspace (dashed magneta line) projects from the airport?
Considering all US untowered airports (50 states), what is the furthest distance that E2 airspace (dashed magneta line) projects from the airport for which it is designated?
Measure from the middle ...
3
votes
2answers
158 views
Why are KACV and KTLV depicted differently on sectional charts than KSGU, KBIH, and KTPL, even though each is E2 w/ E4 extensions?
This question specifically is about non-towered airports surrounded by round circles of E2 airspace, with one or more "extensions" of E4 airspace that abut the E2 airspace. Therefore it is not the ...
1
vote
1answer
50 views
Has there been a recent change in the airspace configuration at KFYV— Drake Field near Fayetteville AR?
Has there been a recent change in the airspace configuration at KFYV-- Drake Field near Fayetteville AR? If so, where can we find an official description of that change?
KFYV -- Drake Field airport ...
7
votes
2answers
369 views
What is the primary reason that the non-towered airports KACV and KTLV have E4 extensions to E2 airspace?
NOTE-- this question is not about why it was desired to protect the airspace that ended up within the E4 "extensions". Rather, this question is about why that was done by designating that airspace as ...
4
votes
1answer
490 views
Why do TACANs not have a symbol for compulsory reporting on IFR Enroute Low Altitude charts?
I am studying the IFR Enroute Low Altitude legend, and I noticed that all NAV Aids other than TACAN have a compulsory reporting point icon.
Edit: Plot twist:
They do appear on the STAR/DP legend.
...
3
votes
1answer
73 views
Why does V165 have two different MEAs over the same route section?
Why does V165 have two distinct MEAs which vary by a large factor (apart from the 180$^{\circ}$ rule of altitudes) considering they would be clearing the same obstacles and receiving signals from the ...
3
votes
2answers
423 views
Why are some legs of a SID considered transitions, even when there's only one?
For example, consider the BAYPO8 departure from Tampa (KTPA). The CAMJO waypoint is the final waypoint on a rather linear route that does not contain other final waypoints. The second page of the FAA ...
0
votes
2answers
142 views
Why there is a 'MACH' in this Compressibility Correction Chart?
I couldn't find what 'Mach 1.0' and 'Mach 0.8' are trying to indicate in the middle of the chart.
Can anybody explain about this please?
9
votes
1answer
2k views
What is “(CFMCC)” on an ILS approach chart?
I'm studying the ILS or LOC RWY 3 approach chart for KMKC. I'm trying to figure out what "(CMFCC)" at the runway means.
Is it a computer navigation aid?
8
votes
1answer
294 views
Where is this VFR reporting point (“Water Tank” near Thousand Oaks, CA) in real life?
I was looking at the VFR sectional near Thousand Oaks, California. The chart has a "WATER TANK" labeled, but I see many water tanks in Thousand Oaks on the Google Maps satellite view.
Does anyone ...
9
votes
1answer
246 views
What is the purpose of this interesting pattern of class E airspace in northwest Alaska?
Perusing SkyVector today I noticed this airspace pattern:
It can be viewed in more detail here.
What immediately jumped out at me is that
there are no charted airports in any of this airspace;
the ...
0
votes
2answers
502 views
What is the radius of a VOR compass rose on a VFR sectional chart?
I thought I read somewhere that it was 10 nautical miles. Does anyone have a reference on whether that's the case or not?
I'd like to use the measurement of a compass rose to aid in my estimation of ...
0
votes
0answers
52 views
Aerodrome category, certification?
I need to know how you tell the certification of new airport just built? how can you tell if airport is certified for International flights or not? approved for intl flights or not meeting ...
17
votes
2answers
4k views
What do these white on red words indicate on a London Heathrow taxiway chart?
What do the words in white block capital letters over a red background denote on this aerodrome chart of LHR?
0
votes
0answers
860 views
What does “ACFT MAX 65/7 ” means on lido charts?
What does "ACFT MAX 65/7" on the minima box means? I found out that its related to wingspan and some vertical distance, but I still didn't get the vertical distance thing !!
3
votes
1answer
855 views
What are the differences between blue airports and green ones on the low en-route chart?
As far as I know, a brown airport on the low en-route chart does not have an approach procedure but blue and green airports do. But what exactly are the differences between these colors?
4
votes
0answers
201 views
What does the letter J mean at the start of an FAA instrument approach chart identifier?
To identify a specific Instrument Approach Chart in either the FAA Terminal Procedures Publication (TPP), or the Department of Defense (DoD) Terminal Low Altitude (TLA) Charts, the FAA uses what they ...
26
votes
7answers
9k views
What does the “DO NOT USE FOR NAVIGATION” indication mean?
Sometimes when I'm browsing IAC charts online I find a "DO NOT USE FOR NAVIGATION" notice printed on the chart. Not always though.
For example, have a look at the chart for Queenstown RNAV (RNP) Y ...
10
votes
1answer
2k views
What does 00 mean on a sectional below the airport runway information?
What does 00-50 mean on the sectional chart under PHNL (see picture)?
1
vote
0answers
63 views
Is there any example of a US VFR sectional chart containing both a reference to “Class E” airspace, and to older terminology for the same airspace?
Is there any example of a US VFR sectional chart whose legend describes the airspace depicted by the thin dashed magenta line both as "Class E" or "Class E airspace", and also with the older ...
3
votes
2answers
179 views
Re old (1993) US VFR sectional charts— when did the term “Class E” first appear?
When did the phrase "Class E" or "Class E airspace" first appear on the legend of US VFR sectional charts, to identify the meaning of the thin dashed magenta line? I'd like to narrow down the date as ...
1
vote
3answers
139 views
Re old (1992) US VFR sectional charts— when was the thin dashed magenta line first used?
When did the thin dashed magenta line, currently used to illustrate Class-E-to-surface airspace, first appear on the legend of US VFR sectional charts? I'd like to narrow down the date as precisely ...
4
votes
1answer
338 views
If an approach chart says “GPS required”, do I need GNSS capability to fly it?
If an aircraft is /Y, /C, or /I (RNAV no GNSS), can they fly an approach chart that says "DME/DME/IRU or GPS required"? GPS in my mind is a GNSS. If you don't have DME/DME/IRU and are RNAV (non-GNSS) ...
1
vote
2answers
1k views
What does the letter “D” next to the VOR frequency and name mean?
In most charts there is the letter D next to the VOR freq. What does this mean? I assume the H and L in brackets in other charts mean high and low VORs (correct me if im wrong). But what does the D ...
4
votes
1answer
1k views
What are the VOR channels used for?
I'm looking at different VORs on a sectional chart and I see the frequencies but I also see a channel number associated with them as well. What are these channel numbers and how do you use them?
2
votes
4answers
1k views
How does one determine the elevation on a sectional?
(Refer to figure 21) How does one determine the elevation variation of the light tan area between Minot (area 1) and Audubon Lake (area 2)?
A. 2,000 ft to 2,500 ft MSL.
B. 2,000 ft to 2,700 ft ...
